16. classify the following processes into spontaneous (e) and non-spontaneous (ne).
_____a. dissolution of a penny in hno3 6m at 30oc.
_____b. freeze 150ml of water at 98of
_____c. decomposition of water into its elements at 55oc
_____d. formation of a convex meniscus in a 25ml cylinder
with 15 ml of water.
_____e. formation of a stable heterogeneous mixture by mixing a
tablespoon of sugar and salt in a glass with 100 ml water.